CN109104376B - Data forwarding method and device, stacking equipment and computer readable medium - Google Patents
Data forwarding method and device, stacking equipment and computer readable medium Download PDFInfo
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- CN109104376B CN109104376B CN201810775545.8A CN201810775545A CN109104376B CN 109104376 B CN109104376 B CN 109104376B CN 201810775545 A CN201810775545 A CN 201810775545A CN 109104376 B CN109104376 B CN 109104376B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/122—Avoiding congestion; Recovering from congestion by diverting traffic away from congested entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/29—Flow control; Congestion control using a combination of thresholds
Abstract
The present disclosure provides a data forwarding method, apparatus, stacking device and computer readable medium, which relate to the technical field of network communication, and the method includes: if a congestion port with congested flow exists in stacking member ports of the stacking frame, selecting a first distributing port for assisting the congestion port to forward a message to be forwarded; setting a first index identifier for a first target message in the message to be forwarded, wherein the first index identifier indicates that the first target message is forwarded outwards through a first sharing port; if the first target message reaches the stacked single board, the identification information of the first sharing port is calculated based on the first index identification, and the first target message is forwarded through the first sharing port.
Description
Technical Field
The present disclosure relates to the field of network communication technologies, and in particular, to a data forwarding method, an apparatus, a stacking device, and a computer readable medium.
Background
IRF (Intelligent Resilient Framework) is a software virtualization technology. The core idea of the IRF is to connect multiple devices together, perform necessary configuration, and virtualize the devices into one device, i.e., a stacked device. The virtualization technology can be used for integrating hardware resources and software processing capacity of a plurality of devices, and realizing cooperative work, unified management and uninterrupted maintenance of the plurality of devices.
If any one member device in the existing stack device fails, a large amount of cross-frame traffic is generated. The large increase in cross-frame flow can put a great deal of stress on the stacked links. For the problem, an existing solution is to manually adjust the hazi factor to switch the stacked link for traffic forwarding. However, the method takes a long time to adjust, a satisfactory result is difficult to achieve, and meanwhile, the message is disordered, which has a great influence on some language video services.
Disclosure of Invention
In view of the above, an object of the present disclosure is to provide a data forwarding method, an apparatus, a stacking device, and a computer readable medium, so as to solve the technical problem that when the forwarding pressure of a stacking link is relieved, an adjustment effect is poor due to a manner of adjusting the stacking link by using a manual adjustment hash algorithm.
In a first aspect, an embodiment of the present disclosure provides a data forwarding method, which is applied to a stacking device, where the stacking device includes multiple stacking boxes, and includes: if a congestion port with flow congestion is detected in a stacking member port, selecting a first branch port for assisting the congestion port to forward a message to be forwarded, wherein the message to be forwarded is a message transmitted from an uplink single board of a stacking frame to the stacking single board through a network board, the stacking single board is provided with a stacking member port for realizing stacking connection between the stacking frames, and the network board is used for exchanging and forwarding between the uplink single board and the stacking single board; setting a first index identifier for a first target message in the message to be forwarded, wherein the first index identifier indicates that the first target message is forwarded outwards through the first branch port; and if the first target message reaches the stacked single board, hashing to the first branch port based on the first index identifier, and forwarding the first target message through the first branch port.
In a second aspect, an embodiment of the present disclosure further provides a data forwarding apparatus, which is disposed in a stacking device, where the stacking device includes a plurality of stacking frames, and includes: a determining unit, configured to select a first branch port for assisting a congestion port in forwarding a to-be-forwarded message when a congestion port with a congested flow exists in a stacking member port of the stacking frame is detected, where the to-be-forwarded message is a message transmitted by an uplink single board of the stacking frame to the stacking single board through a network board, the stacking single board is provided with a stacking member port for implementing stacking connection between the stacking frames, and the network board is used for switching and forwarding between the uplink single board and the stacking single board; a setting unit, configured to set a first index identifier for a first target packet in the to-be-forwarded packet, where the first index identifier indicates that the first target packet is forwarded outward through the first bearer port; a sending unit, configured to calculate, based on the first index identifier, identifier information of the first offload port when the first target packet reaches the stacked board, so as to forward the first target packet through the first offload port.
In a third aspect, an embodiment of the present disclosure further provides a stacking apparatus, including a plurality of stacking blocks, each stacking block including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the above method when executing the computer program.
In a fourth aspect, the disclosed embodiments also provide a computer-readable medium having a non-volatile program code executable by a processor, where the program code causes the processor to execute the method described above.
In the embodiment of the present disclosure, first, a sharing port (i.e., a first sharing port) of a congested port is determined, then, a part of a packet (i.e., a first target packet) is selected from a packet to be forwarded, and a first index identifier is set in the part of the packet, after the part of the packet is obtained, a stacked board can hash to the sharing port of the congested port based on the first index identifier, and then, the part of the packet is forwarded through the sharing port.
Through the processing mode, the hash algorithm does not need to be manually and repeatedly adjusted, and the stacked single boards can be hashed to the corresponding sharing ports by setting the index identifiers of the connection ports related to the sharing ports in the screen boards in part of the messages, so that the phenomenon of long-time packet loss caused by repeatedly adjusting the hash algorithm is avoided, and the technical problem that when the forwarding pressure of the stacked links is relieved, the adjustment effect is poor caused by the mode of manually adjusting the hash algorithm to adjust the stacked links is solved.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the disclosure. The objectives and other advantages of the disclosure will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a stacking apparatus according to an embodiment of the disclosure;
fig. 2 is a flow chart of a method for forwarding data according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of another stacking apparatus according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a process of forwarding a message in a stacking apparatus according to an embodiment of the present disclosure;
FIG. 5 is a flow chart of a triggering scheme according to one embodiment of the present disclosure;
FIG. 6 is a flow diagram of another alternative triggering scheme in accordance with an embodiment of the present disclosure;
FIG. 7 is a flow chart of an alternative flow adjustment scheme according to an embodiment of the present disclosure;
FIG. 8 is a flow diagram of an alternative recovery scheme in accordance with an embodiment of the present disclosure;
fig. 9 is a schematic diagram of a data forwarding apparatus according to an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present disclosure, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
When a certain stacking box in the stacking device fails, a large amount of cross-box traffic is generated. For example, as shown in fig. 1, the stacking apparatus includes a stacking box 1 and a stacking box 2, when a downlink of the stacking box 2 is disconnected, all traffic originally framed in and framed out of the stacking box 2 needs to go across the stacking box to forward the traffic, that is, data forwarded by the stacking box 2 is forwarded out through the stacking box 1. This may cause a large pressure on the stacking link between stack 1 and stack 2. Since the current stacked links are all implemented by aggregation, the cross-frame forwarding of traffic in this case completely depends on manually adjusting the hash algorithm to adjust the stacked links, which depends on the hash factor and the content of the traffic. Repeated adjustment of the hash factor may result in long-term packet loss for the stacked device, and may not have a good adjustment result. Moreover, the hash factor is changed depending on the content of the flow, and the adjustment takes a long time, so that a satisfactory result is difficult to achieve, and packet-by-packet forwarding can cause disorder of the messages, thereby having a great influence on some language video services.
Based on this, in this embodiment, a data forwarding method is provided, and with the method provided by the present disclosure, a hash algorithm does not need to be manually and repeatedly adjusted, and by setting an index identifier of a connection port related to the sharing port in a part of packets, a stacked board can be hashed to the corresponding sharing port, so as to avoid a phenomenon of long-time packet loss caused by repeatedly adjusting the hash algorithm, and further solve a technical problem of poor adjustment effect caused by manually adjusting the hash algorithm to adjust the stacked link when the forwarding pressure of the stacked link is relieved. The method will be described with reference to specific embodiments.
It should be noted that the stack frame described in this embodiment is a member device in a stack device, in other words, a plurality of stack frames constitute one stack device. For example, the stack box may be a switch, but in this embodiment, the stack box is not limited to be a switch, and may also be a network device.
Example 1:
in accordance with an embodiment of the present disclosure, there is provided an embodiment of a method for forwarding data, it should be noted that the steps illustrated in the flowchart of the figure may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different than that herein.
Fig. 2 is a flowchart of a data forwarding method according to an embodiment of the present disclosure, and as shown in fig. 2, the method includes the following steps:
step S202, if a congestion port with flow congestion is detected in stacking member ports of a stacking frame, selecting a first distributing port for assisting the congestion port to forward a message to be forwarded, wherein the message to be forwarded is a message transmitted from an uplink single board of the stacking frame to the stacking single board through a network board, the stacking single board is provided with stacking member ports for realizing stacking connection between the stacking frames, and the network board is used for exchanging and forwarding between the uplink single board and the stacking single board;
the congestion port is an interface with flow congestion at the stack port; the sharing port is an interface in the stack port for sharing part of the messages (or traffic) of the congested port.
Step S204, a first index identifier is set for a first target message in the message to be forwarded, wherein the first index identifier indicates that the first target message is forwarded outwards through the first distributing port;
step S206, if the first target packet reaches the stacked board, calculating identification information of the first sharing port based on the first index identification, so as to forward the first target packet through the first sharing port.
The method provided in the embodiment of the present disclosure can be applied to the stacking frame of the stacking apparatus a shown in fig. 3. When a link between the stack frame 2 and the network device B is broken due to a failure, a message received by the stack frame 2 is sent to the network device B through the stack frame 1, and at this time, a cross-frame traffic is generated between the stack frame 2 and the stack frame 1.
On the basis of fig. 3, as can be seen from fig. 4, if the packet received by the stack frame 2 is forwarded to the stack frame 1, the uplink board described in the above step is the board in the stack frame 2 for receiving the packet to be forwarded sent by the network. The stacked single plates are used for connecting the stacked frame 2 and the stacked frame 1. The stacking single plate is provided with a stacking member port of a stacking frame in the stacking device. The stacking member port is a physical service port for stacking connection in each stacking frame. A stacking link is formed between the stacking member port of the stacking frame 2 and the stacking member port of the stacking frame 1, so that the stacking frame 2 and the stacking frame 1 are connected, wherein the message can be forwarded through the stacking link. The net plate is arranged between the uplink single plate and the stacked single plate and used for realizing the exchange and forwarding between the uplink single plate and the stacked single plate.
Specifically, as shown in fig. 4, the message forwarding process may be described as follows: an uplink single board in the stacking frame 2 receives a message to be forwarded, which is issued by a network; after the uplink single board acquires the message to be forwarded, performing hash calculation to determine a network board for forwarding the message; after the network board is determined, the message to be forwarded can be sent to the stacked single board through the determined network board, wherein the network board is arranged between the uplink single board and the stacked single board and used for realizing the exchange forwarding between the uplink single board and the stacked single board. After obtaining the message to be forwarded, the stacking board performs hash calculation to obtain a corresponding stacking member port, and after determining the stacking member port, the stacking board can send the message to be forwarded to the stacking frame 1 based on the stacking link where the stacking member port is located.
As can be seen from the above description, the network board is hardware for undertaking message exchange and forwarding between the single boards. Typically, the interface of the web board forwards the message to the fixed stack interface. For example, the interface 1 of the mesh board fixedly forwards the message to the stacking member port 1 in the stacked single board, and the interface 2 of the mesh board fixedly forwards the message to the stacking member port 2 in the stacked single board. In this case, after acquiring the message forwarded by the interface 1, the stacking board can determine that the message is forwarded outward through the stacking link where the stacking member port 1 is located, instead of the packet being forwarded outward through the stacking member port 2.
Based on this, in the present disclosure, after the first sharing port is selected, a first index identifier may be set in a part of the packet to be forwarded (i.e., the first target packet), where the first index identifier indicates that the packet is forwarded to the stack 1 through the first sharing port. After acquiring the packet carrying the first index identifier, the stacking board may hash to a corresponding forwarding interface, that is, a first distribution port, based on the first index identifier; and then, the message can be sent out through the sharing port, so that the message forwarding task can be shared for the congestion port through the sharing port on the basis of not adjusting the Hash algorithm.
By adopting the method provided by the disclosure, the hash algorithm does not need to be manually and repeatedly adjusted, and the stacked single boards can be hashed to the corresponding sharing ports by setting the index identifiers of the connection ports related to the sharing ports in the network boards in part of the messages, so that the phenomenon of long-time packet loss caused by repeatedly adjusting the hash algorithm is avoided, and the technical problem of poor adjustment effect caused by manually adjusting the hash algorithm to adjust the stacked links when the forwarding pressure of the stacked links is relieved is solved.
The following describes a method for forwarding the data according to a specific embodiment.
In the disclosure, first, whether a congested port with traffic congestion exists in each stacking member port of a stacking frame is detected, and if so, a first distribution port is selected.
In this embodiment, whether a congested port with traffic congestion exists in each stacking member port of a stacking frame can be detected through the following two schemes.
Scheme one
Detecting whether the bandwidth utilization rate of each stacking member port exceeds a preset threshold value; wherein if yes, determining the stacking member port as a congestion port; after judging that the congestion port is included, whether the stacking member port contains a stacking member port with redundant bandwidth or not can be continuously judged; if yes, selecting the first distributing port.
It should be noted that, in the present disclosure, the scheme one may be executed at intervals, and the specific time interval (or polling period) may be set according to actual needs. By periodically executing the first scheme, the congested port can be found in time, and the message forwarded by the congested port can be effectively adjusted to relieve the forwarding pressure of the congested port, so that the phenomenon of packet loss caused by interface congestion is avoided.
Scheme two
Before detecting whether a congestion port with traffic congestion exists in stacking member ports of a stacking frame, detecting whether an interface DOWM event occurs in any one of a message entering interface and a message forwarding interface; if yes, detecting whether a congestion port with congested flow exists in stacking member ports of the stacking frame; wherein, the message entering interface is a message entering interface in the uplink single board; the message forwarding interface is an interface used for forwarding the message to be forwarded outwards in the target stacking box, and the current stacking box transmits the message to be forwarded to the target stacking box.
Specifically, in this embodiment, if it is detected that a DOWM event occurs at any one of the packet ingress interface and the packet forwarding interface, it is detected whether the bandwidth utilization rate of each stacking member port exceeds a preset threshold; wherein if so, the stack member port is determined to be a congested port. After judging that the congestion port is included, whether the stacking member port contains a stacking member port with redundant bandwidth or not can be continuously judged; if yes, selecting the first distributing port.
It should be noted that, when a DOWM event occurs on any one of the packet ingress interface and the packet forwarding interface, it indicates that a situation that cross-frame traffic may suddenly increase may occur in the stacked link, and in this case, the first scheme may be implemented to prevent a problem that a congested port cannot be detected and adjusted in time due to an excessively long polling time setting.
In this embodiment, after detecting that a port with traffic congestion exists in the stack member ports and selecting the first dispatch port according to the first or second aspect, a first index identifier may be set for a first target packet in the packet to be forwarded.
In an optional implementation manner, in step S204, the step of setting a first index identifier for a first target packet in the to-be-forwarded packet includes the following steps:
step S2041, searching an index identifier of a connection port related to a first distributing port on the screen based on an index mapping table, and determining the index identifier as a first index identifier, wherein the index mapping table comprises an incidence relation between a stacking member port and an interface on the screen;
step S2042, if the network board forwards the message to be forwarded, a first index mark is set for the first target message.
Specifically, in the embodiment of the present disclosure, after the network board forwards the packet to be forwarded to the stacked board, the stacked board performs hash calculation to determine a stacked member port for sending the packet to be forwarded to the outside. The stacked board may hash to a stacked member port for sending the packet to be forwarded to the outside in a source-port (source port), where the source port refers to an interface where the network board is connected to the stacked board. For example, the stacking board performs hash calculation according to an index identifier of a source-port (source port) to obtain a stacking member port for sending the packet to be forwarded to the outside, where the index identifier is denoted as port _ index.
In the embodiment of the present disclosure, the index mapping table includes an association relationship or a corresponding relationship between the stacking member port and the network board interface. Wherein, an index id port _ index corresponds to a unique stack member port. As shown in table 1 below, as can be seen from table 1, the index identification port _ index1 and the index identification port _ index2 correspond to the stack member port 1; the correspondence indicates that the web interface with index id port _ index1 is used to forward packets to stack member port 1, but not to forward packets to stack member port 2. As can be seen from table 1, the index mapping table further includes the adjusted traffic value and the current traffic. The adjustment flow value refers to a flow value shared by a congested port in the stack member port, and a flow value shared by a shared port in the stack member port as the congested port.
TABLE 1
In this embodiment, a plurality of special index identifiers port _ index, for example, FF1, FF2, etc., may be preset to fix the corresponding stack member port, and the special index identifier port _ index is updated into the index mapping table. It should be noted that the special index id port _ index may also adopt other representation manners, and this embodiment is not particularly limited.
When congestion occurs in one stacking member port, the redundant bandwidth condition of the rest stacking member ports in each stacking member port is firstly judged. If each stacking member port contains a stacking member port with redundant bandwidth, the flow is selected to be less than 80% (the specific threshold value selection can be set according to actual needs), and the stacking member port with the minimum flow is taken as a first distributing port, and is recorded as: port 3, assume that the corresponding special index identification port _ index value of the first allocated port is FF 3.
After a message (or traffic) to be forwarded reaches a network board, firstly determining a network board interface (namely, the target interface) corresponding to a congestion port according to the index mapping table; then, the index mapping table is searched for a special index identifier port _ index FF3 corresponding to port 3. In the process of forwarding the message to be forwarded by the web interface, a part of the message is selected from the message to be forwarded as a first target message, and a special index identifier port _ index FF3 (i.e., the first index identifier) is set for the first target message. After the first target packet reaches the stacked board, the stacked board performs hash calculation according to the special index identifier port _ index FF3 to obtain a stacked member port, i.e., the port 3, for sending the packet to be forwarded to the outside. After obtaining the port 3, the first destination packet may be forwarded through the port 3.
As can be seen from the above description, in this embodiment, a hash algorithm does not need to be manually adjusted, so as to solve the technical problem that a packet loss phenomenon occurs at a congested port due to a manner of adjusting a stacking link by using a hash algorithm that is manually adjusted when a large amount of cross-frame traffic exists in a stacking device. By adopting the method provided by the embodiment, the phenomenon of packet loss can not occur, and the Hash algorithm does not need to be adjusted manually.
In another optional implementation, the setting a first index identifier for a first target packet in a to-be-forwarded packet further includes: and selecting a part of messages from the messages to be forwarded as a first target message according to a preset proportion value, and setting a first index identifier for the first target message.
Specifically, in this embodiment, 10 packets are sampled from every 100 packets according to a proportion of 10%, and each packet in the 10 packets is provided with a special index identifier port _ index: FF 3. At this time, the source port field of 10% of the messages on the target interface of the network board is set to FF3, and the part of the messages is fixed hashed to the stack member port after reaching the stack board, for example, to port 3.
It should be noted that, in this embodiment, the preset ratio may be selected to be 10%, and may also be selected to be any value other than 10%, which is not specifically limited in this embodiment.
In this embodiment, after the first target packet is forwarded by the first offload port, if the traffic of the first offload port exceeds the second threshold, the preset ratio value is reduced from the current value to the target value, where the preset ratio value is a ratio of the first target packet in the packet to be forwarded.
Specifically, in this embodiment, after the first offload port forwards the first target packet, it is determined whether the traffic of the first offload port reaches 100% (the second threshold) of the traffic that can be transmitted by the first offload port. If yes, the preset proportion value needs to be adjusted, namely the preset proportion value is reduced to a target value from a current value. For example, the preset proportional value is reduced from 10% to 5%. After the preset proportion value is reduced, a first target message can be selected from the messages to be forwarded according to the target value, and a first index identifier is set for the first target message. For example, 5 messages are randomly selected from 100 messages, and a first index identifier is set for the 5 messages.
It should be noted that, in this embodiment, after the first offload port sends the first target packet to the outside, it may be further determined whether the traffic of the first offload port reaches 100% of the traffic that can be transmitted by the first offload port again, if so, the above steps are continuously repeated, and if not, the subsequent steps are executed.
It should be further noted that, in this embodiment, the second threshold is not limited to 100%, and may also be another value, for example, 98% or 99%, which is not specifically limited in this embodiment.
In the embodiment of the present disclosure, after the first offload port forwards the first target packet, if the flow of the first offload port does not reach the second threshold and the flow of the congested port reaches the second threshold, the second offload port for assisting the congested port in forwarding the packet to be forwarded is selected; setting a second index identifier for a second target message in the message to be forwarded; and if the second target message reaches the stacked single board, hashing to a second sharing port based on a second index identifier, and forwarding the second target message through the second sharing port, wherein the second index identifier is an identifier of an interface associated with the second sharing port in the network board.
Specifically, after the first offload port forwards the first target packet, it is determined whether the traffic of the first offload port reaches 100% (the second threshold) of the traffic that can be transmitted by the first offload port, and if it is determined that the traffic of the congested port does not reach the second threshold, it is continuously determined whether the traffic of the congested port reaches 100% (the second threshold) of the traffic that can be transmitted by the congested port. If yes, the congestion situation of the congested port still exists.
In this case, a stack member port of the smallest flow rate among the respective stack member ports may be selected as the second distribution port, for example, the port 4 among the stack member ports may be selected as the second distribution port, in the method described in the above embodiment. Assuming that the port _ index corresponding to the port 4 is the FF4 (i.e., the second index id), the second target packet with the second index id (FF4) set therein is sent to the stacked board, so that the stacked board determines the second sharing port (port 4) based on the second index id (FF4), and forwards the second target packet through the second sharing port (port 4).
It should be noted that, in this embodiment, the second target packet is also a partial packet selected from the packets to be forwarded according to the preset ratio, and the first target packet and the second target packet are not overlapped.
It should be further noted that, part of the messages may be selected from the messages to be forwarded as the first target message according to a preset ratio value of 1; and selecting a part of messages from the messages to be forwarded as a first target message according to a preset proportion value 2, wherein the preset proportion value 1 is the same as or different from the preset proportion value 2.
In this embodiment, after the first offload port forwards the first target packet, if the traffic of both the first offload port and the congestion port does not reach the second threshold, the current traffic value and the adjustment traffic value of the stack member port are written into the index mapping table, where the index mapping table includes the mapping relationship between the stack member port on the stack board and each port on the network board, and the current traffic value and the adjustment traffic value of each stack member port.
Specifically, when it is determined that the traffic of the congested port and the traffic of each sharing port do not reach 100% (the second threshold), it indicates that the adjustment is completed, and at this time, the current traffic value and the adjustment traffic value of each stack member port are filled in the index mapping table.
The above described procedure is a processing method when one stacking member port has traffic congestion, and if there are multiple stacking member ports having traffic congestion, the processing method of each stacking member port having traffic congestion is the same, and the multiple stacking member ports can be adjusted one by one. For example, the priority order of the plurality of stack member ports may be adjusted one by one.
In this embodiment, the method further includes: reading the current flow value and the adjustment flow value of the congestion port from the index mapping table at intervals of preset time; judging whether the congestion port meets the recovery condition or not based on the current flow value and the adjustment flow value of the congestion port; and if so, setting a third index identifier for all the messages to be forwarded so as to enable the messages to be forwarded outwards through the congestion port, wherein the third index identifier is an identifier of an interface associated with the congestion port in the network board.
Specifically, in the present embodiment, the current flow value and the adjustment flow value of the congested port are read from the index mapping table at preset time intervals. When the adjusted flow value + the current flow of the congested port is < port bandwidth 90%, it is determined that the congested port satisfies the recovery condition. At this time, the first target message of the message to be forwarded, or the special index identifier set in the second part or the special index identifier is restored to a default value, wherein the default value is a third index identifier, which indicates that the message to be forwarded is forwarded outwards through the congested port. After the special index identifier is restored to the default value, the index mapping table may be re-recorded, so that the information of the shared port and the congested port is re-written into the corresponding entry of the index mapping table.
Through the processing mode, the method provided by the disclosure can hash the stacked single boards to the corresponding sharing ports by setting the index identifiers of the connection ports related to the sharing ports in the mesh boards in part of the messages without manually and repeatedly adjusting the hash algorithm, so as to avoid the phenomenon of long-time packet loss caused by repeatedly adjusting the hash algorithm, and further solve the technical problem of poor adjustment effect caused by manually adjusting the hash algorithm to adjust the stacked links when the forwarding pressure of the stacked links is relieved.
Example 2:
as can be seen from the description of the above embodiment 1, in this embodiment, the data forwarding method mainly includes the following schemes: the triggering scheme, the traffic adjusting scheme and the recovery scheme are respectively described below with reference to fig. 5 to 8.
The specific process of an alternative triggering scheme as shown in fig. 5 is described as follows:
detecting whether the bandwidth utilization rate of each stacking member port exceeds a preset threshold value; wherein if yes, determining the stacking member port as a congestion port; after judging that the congestion port is included, whether the stacking member port contains a stacking member port with redundant bandwidth or not can be continuously judged; and if the judgment result shows that the congestion exists, executing a flow regulation scheme, wherein the flow regulation scheme is a scheme for regulating the forwarding flow for the congested port.
The specific process of another alternative triggering scheme as shown in fig. 6 is described as follows:
detecting whether any interface DOWM event occurs in any interface of a message entering interface and a message forwarding interface; if yes, detecting whether the bandwidth utilization rate of each stacking member port exceeds a preset threshold value; wherein if yes, determining the stacking member port as a congestion port; after judging that the congestion port is included, whether the stacking member port contains a stacking member port with redundant bandwidth or not can be continuously judged; and if the traffic flow is judged to contain, executing a traffic flow adjusting scheme. Wherein, the message entering interface is a message entering interface in the uplink single board; the message forwarding interface is an interface used for forwarding the message to be forwarded outwards in the target stacking box, and the current stacking box transmits the message to be forwarded to the target stacking box.
The specific process of an alternative flow regulation scheme as shown in fig. 7 is described as follows:
step S701, determining a congestion port;
step S702, checking a target interface corresponding to the congestion port on the network board through an index mapping table;
step S703, determining whether to find the first branch port of the congested port, wherein if the first branch port is not found, it indicates that the adjustment is failed; if the first branch port is found, go to step S704;
step S704, determining a first index identifier, wherein the first index identifier indicates that a first target message in the message to be forwarded is forwarded outwards through a first sharing port;
step S705, determining a preset proportion value;
step S706, selecting a part of messages from the messages to be forwarded as first target messages according to a preset proportion value, and setting a first index identifier for the first target messages;
step S707, sending the first target message carrying the first index identifier to the stacked single board; so that the stacked single board determines a first sharing port based on the first index identifier, and forwards the first target message through the first sharing port;
step S708, after the first branch port forwards the first target message, judging whether the first branch port has a traffic congestion condition; if the first offload port has a traffic congestion condition, then step S709 is executed; if the traffic congestion does not occur at the first offload port, step S710 is executed;
step S709, re-determining the preset proportion value, and returning to execute the step S706; continuously judging whether the congestion port has the traffic congestion condition;
step S710, judging whether the congestion port has the flow congestion condition, if so, returning to execute step S703, otherwise, executing step S711;
step S711 writes the current flow value and the adjustment flow value of the stack member port into an index mapping table.
The specific process of an alternative recovery scheme as shown in fig. 8 is described as follows:
step S801, periodically checking an index mapping table to read a current flow value and an adjustment flow value of a congestion port from the index mapping table;
step S802, determining whether the congested port meets a recovery condition, specifically, determining whether an adjusted flow value + current flow < port bandwidth > 90% of the congested port is true, if true, meeting the recovery condition, otherwise not meeting the recovery condition; if the recovery condition is satisfied, executing step S803, otherwise returning to execute step S801;
step S803, a third index identifier is set for all messages of the message to be forwarded, where the third index identifier is an identifier of an interface associated with the congested port in the network board, and represents that the message to be forwarded is forwarded outward through the congested port.
As can be seen from the descriptions in fig. 5 to fig. 8, in the method provided by the present disclosure, the hash algorithm does not need to be manually repeatedly adjusted, and the index identifier of the connection port related to the sharing port in the mesh board is set in a part of the packet, so that the stacked single board can be hashed to the corresponding sharing port, thereby avoiding a long-time packet loss phenomenon caused by repeatedly adjusting the hash algorithm, and further solving the technical problem of poor adjustment effect caused by manually adjusting the hash algorithm to adjust the stacked link when the forwarding pressure of the stacked link is relieved.
Example 3:
the embodiment of the present disclosure further provides a data forwarding device, where the data forwarding device is mainly used to execute the data forwarding method provided in the embodiment of the present disclosure, and the following describes the data forwarding device provided in the embodiment of the present disclosure in detail.
Fig. 9 is a schematic diagram of a data forwarding apparatus according to an embodiment of the present disclosure, and as shown in fig. 9, the data forwarding apparatus mainly includes a determining unit 10, a setting unit 20, and a sending unit 30, where:
a determining unit 10, configured to select a first branch port for assisting a congestion port in forwarding a to-be-forwarded message when detecting that the congestion port with a congested flow exists in a stacking member port of the stacking frame, where the to-be-forwarded message is a message transmitted by an uplink single board of the stacking frame to the stacking single board through a network board, the stacking single board is provided with a stacking member port for implementing stacking connection between the stacking frames, and the network board is used for exchanging and forwarding between the uplink single board and the stacking single board;
a setting unit 20, configured to set a first index identifier for a first target packet in the to-be-forwarded packet, where the first index identifier indicates that the first target packet is forwarded through the first bearer port to the outside;
a sending unit 30, configured to calculate, based on the first index identifier, flag information of the first offload port when the first target packet reaches the stacked board, so as to forward the first target packet through the first offload port.
In the disclosure, without manually and repeatedly adjusting the hash algorithm, the stacked single boards can be hashed to the corresponding sharing ports by setting the index identifiers of the connection ports related to the sharing ports in the mesh boards in part of the messages, so as to avoid the phenomenon of long-time packet loss caused by repeatedly adjusting the hash algorithm, and further solve the technical problem of poor adjustment effect caused by manually adjusting the hash algorithm to adjust the stacked links when the forwarding pressure of the stacked links is relieved.
Alternatively, the setting unit 20 includes: a searching module, configured to search, based on an index mapping table, an index identifier of an interface associated with the first offload port on the network board, and determine the index identifier as the first index identifier, where the index mapping table includes an association relationship between a stack member port and an interface on the network board; and the first setting module is used for setting the first index identifier for the first target message under the condition of forwarding the message to be forwarded on the network board.
Optionally, the apparatus is further configured to: after the first target message is forwarded by the first branch port, if the flow of the first branch port reaches a second threshold value, the preset proportional value is reduced from the current numerical value to a target numerical value.
Optionally, the apparatus is further configured to: after the first branch port forwards the first target message, if the flow of the first branch port does not reach the second threshold value and the flow of the congested port reaches the second threshold value, selecting a second branch port for assisting the congested port in forwarding a message to be forwarded; setting a second index identifier for a second target message in the message to be forwarded; and if the second target message reaches the stacked single board, hashing to a second branch port based on the second index identifier, and forwarding the second target message through the second branch port, wherein the second index identifier indicates that the second target message is forwarded outwards through the second branch port.
Optionally, the apparatus is further configured to: after the first target message is forwarded by the first branch port, if the flow rates of the first branch port and the congestion port do not reach the second threshold value, writing the current flow rate value and the adjustment flow rate value of the stacking member port into an index mapping table, where the index mapping table includes the mapping relationship between the stacking member port on the stacking single board and each port on the network board, and the current flow rate value and the adjustment flow rate value of each stacking member port.
Optionally, the apparatus is further configured to: reading the current flow value and the adjustment flow value of the congestion port from the index mapping table at preset time intervals; judging whether the congestion port meets a recovery condition or not based on the current flow value and the adjustment flow value of the congestion port; and if so, setting a third index identifier for all the messages of the messages to be forwarded so as to enable the messages to be forwarded outwards through the congestion port, wherein the third index identifier is an identifier of a connection port related to the congestion port in the network board.
Optionally, the apparatus is further configured to: before detecting whether a congestion port with congestion flow exists in the stacking member ports, detecting whether an interface DOWM event occurs in any one of a message entering interface and a message forwarding interface; if yes, detecting whether a congestion port with congested flow exists in the stacking member ports; wherein, the message entering interface is a message entering interface in the uplink single board; the message forwarding interface is an interface used for forwarding the message to be forwarded outwards in the target stack box, and the current stack box transmits the message to be forwarded to the target stack box.
In another embodiment, a stacking apparatus is further provided, which includes a plurality of stacking blocks, each of the stacking blocks includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the data forwarding method described in any of embodiments 1 and 2 above when executing the computer program.
In another embodiment, there is also provided a computer-readable medium having a non-volatile program code executable by a processor, the program code causing the processor to perform the method for forwarding data described in any of embodiments 1 and 2 above.
The device provided by the embodiment of the present disclosure has the same implementation principle and technical effect as the foregoing method embodiment, and for the sake of brief description, no mention is made in the device embodiment, and reference may be made to the corresponding contents in the foregoing method embodiment.
In addition, in the description of the embodiments of the present disclosure, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.
In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing and simplifying the present disclosure, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present disclosure. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present disclosure, which are used for illustrating the technical solutions of the present disclosure and not for limiting the same, and the scope of the present disclosure is not limited thereto, and although the present disclosure is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive of the technical solutions described in the foregoing embodiments or equivalent technical features thereof within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present disclosure, and should be construed as being included therein. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (16)
1. A data forwarding method is applied to a stacking device, wherein the stacking device includes a plurality of stacking frames, and includes:
if a congestion port with flow congestion is detected in a stacking member port, selecting a first branch port for assisting the congestion port to forward a message to be forwarded, wherein the message to be forwarded is a message transmitted from an uplink single board of a stacking frame to the stacking single board through a network board, the stacking single board is provided with a stacking member port for realizing stacking connection between the stacking frames, and the network board is used for exchanging and forwarding between the uplink single board and the stacking single board; the congestion port is an interface of which the flow congestion occurs at the stack port; the sharing port is an interface which is used for sharing part of messages or flow of the congestion port in the stacking port;
setting a first index identifier for a first target message in the message to be forwarded, wherein the first index identifier indicates that the first target message is forwarded outwards through the first branch port;
if the first target message reaches the stacked single board, calculating the identification information of the first branch port based on the first index identification so as to forward the first target message through the first branch port.
2. The method according to claim 1, wherein setting a first index identifier for a first target packet in the to-be-forwarded packet comprises:
searching an index identifier of an interface associated with the first distributing port on the network board based on an index mapping table, and determining the index identifier as the first index identifier, wherein the index mapping table comprises an association relation between a stacking member port and the interface on the network board;
and if the network board forwards the message to be forwarded, setting the first index identification for the first target message.
3. The method of claim 2, further comprising:
after the first target message is forwarded by the first branch port, if the flow of the first branch port reaches a second threshold value, reducing a preset proportional value from a current numerical value to a target numerical value.
4. The method of claim 3, further comprising:
after the first branch port forwards the first target message, if the flow of the first branch port does not reach the second threshold value and the flow of the congested port reaches the second threshold value, selecting a second branch port for assisting the congested port in forwarding a message to be forwarded;
setting a second index identifier for a second target message in the message to be forwarded;
and if the second target message reaches the stacked single board, hashing to a second branch port based on the second index identifier, and forwarding the second target message through the second branch port, wherein the second index identifier indicates that the second target message is forwarded outwards through the second branch port.
5. The method according to claim 3, wherein after the first offload port forwards the first target packet, if the traffic of both the first offload port and the congested port does not reach the second threshold, the current traffic value and the adjustment traffic value of the stack member port are written into an index mapping table, where the index mapping table includes a mapping relationship between the stack member port on the stack board and each port on the network board, and the current traffic value and the adjustment traffic value of each stack member port.
6. The method of claim 5, further comprising:
reading the current flow value and the adjustment flow value of the congestion port from the index mapping table at preset time intervals;
judging whether the congestion port meets a recovery condition or not based on the current flow value and the adjustment flow value of the congestion port;
and if so, setting a third index identifier for all the messages of the messages to be forwarded so as to enable the messages to be forwarded outwards through the congestion port, wherein the third index identifier is an identifier of a connection port related to the congestion port in the network board.
7. The method of claim 1, further comprising:
before detecting whether a congestion port with congestion flow exists in the stacking member ports, detecting whether an interface DOWM event occurs in any one of a message entering interface and a message forwarding interface;
if yes, detecting whether a congestion port with congested flow exists in the stacking member ports;
wherein, the message entering interface is a message entering interface in the uplink single board; the message forwarding interface is an interface used for forwarding the message to be forwarded outwards in the target stack box, and the current stack box transmits the message to be forwarded to the target stack box.
8. The device for forwarding data is arranged in a stacking device, wherein the stacking device comprises a plurality of stacking frames, and comprises:
a determining unit, configured to select a first branch port for assisting a congestion port in forwarding a to-be-forwarded message when a congestion port with a congested flow exists in a stacking member port of the stacking frame is detected, where the to-be-forwarded message is a message transmitted by an uplink single board of the stacking frame to the stacking single board through a network board, the stacking single board is provided with a stacking member port for implementing stacking connection between the stacking frames, and the network board is used for switching and forwarding between the uplink single board and the stacking single board; the congestion port is an interface of which the flow congestion occurs at the stack port; the sharing port is an interface which is used for sharing part of messages or flow of the congestion port in the stacking port;
a setting unit, configured to set a first index identifier for a first target packet in the to-be-forwarded packet, where the first index identifier indicates that the first target packet is forwarded outward through the first bearer port;
a sending unit, configured to calculate, based on the first index identifier, identifier information of the first offload port when the first target packet reaches the stacked board, so as to forward the first target packet through the first offload port.
9. The apparatus according to claim 8, wherein the setting unit is configured to:
searching an index identifier of an interface associated with the first distributing port on the network board based on an index mapping table, and determining the index identifier as the first index identifier, wherein the index mapping table comprises an association relation between a stacking member port and the interface on the network board;
and if the network board forwards the message to be forwarded, setting the first index identification for the first target message.
10. The apparatus of claim 9, wherein the apparatus is further configured to:
after the first target message is forwarded by the first branch port, if the flow of the first branch port reaches a second threshold value, reducing a preset proportional value from a current numerical value to a target numerical value.
11. The apparatus of claim 10, wherein the apparatus is further configured to:
after the first branch port forwards the first target message, if the flow of the first branch port does not reach the second threshold value and the flow of the congested port reaches the second threshold value, selecting a second branch port for assisting the congested port in forwarding a message to be forwarded;
setting a second index identifier for a second target message in the message to be forwarded;
and if the second target message reaches the stacked single board, hashing to a second branch port based on the second index identifier, and forwarding the second target message through the second branch port, wherein the second index identifier indicates that the second target message is forwarded outwards through the second branch port.
12. The apparatus of claim 10, wherein the apparatus is further configured to:
after the first target message is forwarded by the first branch port, if the flow rates of the first branch port and the congestion port do not reach the second threshold value, writing the current flow rate value and the adjustment flow rate value of the stacking member port into an index mapping table, where the index mapping table includes the mapping relationship between the stacking member port on the stacking single board and each port on the network board, and the current flow rate value and the adjustment flow rate value of each stacking member port.
13. The apparatus of claim 12, wherein the apparatus is further configured to:
reading the current flow value and the adjustment flow value of the congestion port from the index mapping table at preset time intervals;
judging whether the congestion port meets a recovery condition or not based on the current flow value and the adjustment flow value of the congestion port;
and if so, setting a third index identifier for all the messages of the messages to be forwarded so as to enable the messages to be forwarded outwards through the congestion port, wherein the third index identifier is an identifier of a connection port related to the congestion port in the network board.
14. The apparatus of claim 8, wherein the apparatus is further configured to:
before detecting whether a congestion port with congestion flow exists in the stacking member ports, detecting whether an interface DOWM event occurs in any one of a message entering interface and a message forwarding interface;
if yes, detecting whether a congestion port with congested flow exists in the stacking member ports;
wherein, the message entering interface is a message entering interface in the uplink single board; the message forwarding interface is an interface used for forwarding the message to be forwarded outwards in the target stack box, and the current stack box transmits the message to be forwarded to the target stack box.
15. A stacking apparatus comprising a plurality of stacking blocks, each stacking block comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any of claims 1-7 when executing the computer program.
16. A computer-readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method of any of claims 1-7.
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| CN110995607A (en) * | 2019-12-19 | 2020-04-10 | 锐捷网络股份有限公司 | Method, device, network equipment and storage medium for transmitting flow |
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| CN103581274B (en) * | 2012-08-09 | 2017-04-12 | 杭州华三通信技术有限公司 | Message forwarding method and device in stacking system |
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